2.009 Product engineering processes!"I always wanted to be somebody…"I should have been more specific!!Lily Tomlin2.009 Product engineering processes!Today!"Specifications defining success!!But first…!mini quiz: form follows function means…"nope!"intended!meaning"sometimes"maybe"form is function!!and…!a few reminders"team review results online!starting companies, 4 PM today!instructor review opens this weekend through 5 PM Wed.!full shop 6-9 Tuesday and Wednesday!team areas Monday 9-5!Specifications!mockup review: preliminary product contract"Customer needs!Monday’s class"converting customer data to customer needs"extracting customer data "observation !one-on-one interviews!what, not how!positive, not negative!same specificity!do not prioritize!Identifying attributes!map attributes to needs" Attribute assemblability usability fault detection wow factor Need easy to setup safe special house of quality!Once you have attributes!set specifications"translate the product attributes (mapped to customer needs) into quantitative design performance targets!!quantify the core benefit of your product !!define internal basis for measuring success!!provide a basis for resolving trade-offs!"keep the development effort focused!!!!!specification!what it must do!Setting specifications!definition"a precise description of what the product must do!!!!design attribute: assemblability!metric: time to assemble!unit: seconds!value: less than 60 !owner: Floyd!customer need: easy to install!interpretation: average time to assemble is less than 60 seconds (Floyd)!Setting specifications!they are NOT…"descriptions of how to implement the product (embodiment)!!!!customer need: easy to find"design attribute: visibility!metric: color!unit: rgb!value: 255, 255, 0!owner: Floyd!metric: time to spot!unit: seconds!value: less than 5!(yellow!) !Identifying appropriate metrics !measure the product attributes"metrics should be observable or analyzable properties/behaviors of the product!!metrics should be quantifiable!!include metrics used in the marketplace for benchmarking!Attributes and specifications!example: types of metric values"what product might meet these specifications?!!!attribute metric unit value damage detection! defects visible! binary! yes/no!solidifies in heat ! thermo-sets! binary! yes/no!household usability! curing temperature! Celsius! between 50 and 100!producability! manufacturing time! days! between 1 and 2!food safe! FDA approved mat’ls.! binary! yes/no!Atkins-diet friendly! carbohydrate content! grams/product! less than 1!mini quiz!!Attributes and specifications!example: types of values"attribute metric unit value damage detection! defects visible! binary! yes/no!solidifies in heat ! thermo-sets! binary! yes/no!household usability! curing temperature! Celsius! between 50 and 100!producability! manufacturing time! hours! between 1 and 2!food safe! FDA approved mat’ls.! binary! yes/no!Atkins-diet friendly! carbohydrate content! grams/unit! less than 1!Exercise!writing specifications"develop specifications consistent with the product!!assess specifications developed by another team!!interpret specifications and identify products that meet them (and why)!!present and critique specifications!!!each section has a ‘product’ kit!Exercise!step 1: 10 minutes"develop specifications consistent with your fruit “product”"use attribute and specification forms provided (one extra copy of each)!write legibly, use black sharpie provided"""attribute metric unit value damage detection! defects visible ! binary! yes/no!solidifies in heat ! thermo-sets! binary! yes/no!home usability! curing temperature! Celsius! between 50 and 100!producability! manufacturing time! days! between 1 and 2!food safe! FDA approved mat’ls.! binary! yes/no!Atkins-diet friendly! carbohydrate content! grams/unit! less than 1!Exercise!step 2: 7 minutes"review another section’s specification"i) use red sharpie to highlight questionable specifications"ii) identify products that fit the specification, using form provided"""product is: metric unit value visible defects! binary! yes/no!could be: thermo-sets! binary! yes/no!setting temperature! Celsius! between 50 and 100!manufacturing time! days! between 1 and 2!FDA approved mat’ls.! binary! yes/no!carbohydrate content! grams/unit! less than 1!product description? seems longExercise!step 3: 7 minutes"present and critique:"what products fit and why, discuss specification"""critiqued a!good specification?"critiqued a!less good
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